Switch-stand.



R. J. DAVIDSON & J. B. STRONG.

SWITCH STAND. APPLICATION FILED SEPTA, 1912'.

1,098,021. Patented May 26, 1914.

3 SHEETS-SHEET 1.

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R. J. DAViDSON & J. B. STRONG.

SWITCH STAND.

APPLICATION FILED SEPT. 4, 1912.

. Patented May 26 3 SHEETS-SHEET 2.

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R. J. DAVIDSON & J. B. STRONG.

SWITCH STAND.

APPLICATION FILED SEPT. 4, 1912.

Patented May 26, 1914.

3 SHEBTSSHEET 3.

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UNITE STATES PATENT OFFICE.

ROBERT J. DAVIDSON AND JAMES B. STRONG, OF HILLBURN, NEW YORK.

SWITCH-STAND.

Specification of Letters Patent.

Patented May 26, 1914.

Application filed September 4, 1912.' Serial No. 718,544.

To all whom it may concern Be it known that we, ROBERT J. DAVIDSON andJAMES B. STRONG, citizens of the United States, residing at Hillburn, inthe county of Rockland and State of New York, have invented certain newand useful Improvements in Switch-Stands, of which the following is aspecification.

This invention relates to switch stands used in railway construction,more particularly to the type wherein the switch points are locked intheir closed positions.

The primary object of this invention is the devising of means wherebythe locking operation may be positively efi'ected by movement of theswitch actuating means independently of the operation of said actuatingmeans when throwing the switch, there-- by adapting the locking means toserve as an actuating means and control for other suitable mechanism, asfor illustration, a

signaling mechanism, which will continue its control upon said mechanismduring the switch throwing operation and until the locking operation isagain efi'ected.

The various other objects of the invention will be set forth in thefollowing description of certain mechanism embodying the invention.

In one embodiment of our invention, the locking block, which is mountedon the switch stem or spindle, is provided with a collar having apetticoat or apron which is adapted to engage the jaws of a rodconnected to a locking pin that is in position to engage a locking baroperatively connected to the switch points. When the main line is clear,the apron portion of the collar engages the jaws of the rod, throwingthe locking pin into engagement with the bar when the handle is loweredand holding the pin in this position. l/Vhen the switch han dle israised, it carries with it the rod engaging the collar drawing thelocking pin out of engagement with the bar, which movement of thelocking pin may be utilized for simultaneously operating othermechanism, as for example a danger signaling device. The handle may thenbe turned to throw the switch points into the siding whereby the apronportion of the collar is disengaged from the jaws of the rod, allowingthe handle to be lowered while the locking pin is at rest out ofengagement with the bar.

7 In another embodiment of our invention,

two locking pins are used to positively lock the switch points in bothpositions, each of the'pins being capable of actuating separatemechanisms, as for example two signaling devices, one for indicatingwhen the main line is clear, and the other for indicating the conditionof the branch or siding line. Both of the locking pins are actuated bythe switch operating handle and are connected thereto through rodsprovided with jaws engaging a collar formed 011 the locking blocksubstantially as in the first embodiment of our invention. The collar isprovided with an apron which is so positioned as to engage one or theother of the rods 7 when the handle is in its respective positions inwhich the switch points have been actuated to clear the main line or toconnect the branch or side line.

While we have shown two specific embodiments of our invention, it willbe understood that various modifications may be re sorted to within theskill of the mechanic without departing from the spirit and scope of theinvention as defined in the claims.

In the drawings, Figure 1 is a plan of one form of our inventionillustrating the switch points as thrown to the side line, and thelocking pin disengaged. Fig. 2 is an elevation illustrating the switchpoints in thrown position together with the locking bar. Fig. 3 is asection through line 3-3 of Fig. 1, illustrating the switch stand in theposition it assumes when the switch points are thrown to clear the mainline. Fig. 4 is a section illustrating the switch stand in the positionit assumes when the switch points have been partially thrown, the handlebeing still in raised position. Figs. 5, 6 and 7 are detailsillustrating the connection between the locking block and the rodactuating the locking bolt in the various positions the parts mayassume. Fig. 8 is a plan of another form of our invention having twolocking pins. Fig. 9 is a fragmental elevation illustrating the lockingbar. Figs. 10, 11 and 12 are details of the connection be tween thelocking block and the rods actuating the locking pins illustrating thevarious positions they may assume.

Referring to Figs. 1 to 7 illustrating one embodiment of the invention,the operating handle 1 is pivoted upon a sleeve 2, attached to thespindle or stem 3, rotatably mounted in the casing 4. This spindle isconnected with the switch points 5, through a connecting rod 6, so thatwhen the spindle is r0- tated by the handle, the switch points will beshifted into position to clear the main line or to throw in the shuntline. The handle may be locked to a locking tongue 7 on locking block 7.I/Vhen the handle 1 is turned about its pivot on the sleeve 2, itactuates mechanism whereby the locking pin or bolt is released fromengagement with the switch points, which operation of the pin mayconveniently be utilized for actuating other mechanism, as for example,dangeisignaling mechanism. For this purpose, the handle 1 engages a lugon the locking block 7 the latter being slidably mounted upon the sleeve2 and constrained to rotate therewith. The locking block has extendinglaterally therefrom, a collar 8, formed with a petticoat 9, engagingjaws 10 of a rod 11, connected by any desired means as a bell-crank 12and a rod 13 to a locking pin 14 slidably mounted in position to engagea bar 15 having a single aperture 150 therein through which the pin orbolt may pass. This bar 15 is connected to the switch points and movestogether therewith. When the switch points are in position to clear themain line, the aperture is in register with the bolt 14, so that whenthe handle is lowered in the position indicated in Fig. 3, the boltpasses through the aperture, look ing the bar and the switch points inposition. To facilitate the bolt 14 actuating other mechanism when it isitself actuated, it is preferably connected to a rod 16 which mayoperate any suitable mechanism desired. In the present instance it isillustrated as operating an arm 17 of a shunt box 18 which may operateany desired mech anism, as for instance a signal indicating danger.

Fig. 5 illustrates the position of the collar and petticoat or apron ofthe locking block with reference to the rod 11 when the handle islowered and the switch points are thrown to clear the main line. Thecollar and petticoat fill up the entire space between the jaws and thuswhen the handle is low ered, it depresses the rod 11 to project thelocking bolt into the aperture in the locking bar. Fig. 6 illustratesthe rod llraised and the locking block partly rotated and still fillingup the entire space between the jaws of the rod. In Fig. 7, the lockingblock has been rotated sufliciently to disengage the petticoat from thejaws and lowered without actuating the rod 11. In this position, theswitch points are thrown to the shunt line, and the locking bolt is outof engagement with the bar In the form illustrated in Figs. 8 to 12, thelocking block 7 has a collar 8 and a petticoat 9 engaging the jaws 10and 10 of two rods ll and 11 mounted on each side of the block andconnected by rods 13 and 13 to locking pins 1 1 and 14: which aremounted in position to engage apertures 150 and 150 formed in lockingblock 15 connected with the switch points. The pins M and 14respectively are connected by rods 16 and 16 to arms 1'? and 17 of shuntboxes 18 and 18 which may operate any desired mechanism, when theirrespective pins are projected into the apertures.

With this construction, the switch points :1

are locked both when thrown in position to clear the main line and whenthrown over to the shunt line.

' Referring to Figs. 10, 11 and 12, it will be noted that one or theother of the rods 11 and 11 is thrown down to lock the lock ing bar andto operate the corresponding mechanism. In Fig. 10, the rod 11" islowered to maintain the pin 14E in engagement with the bar 15 to lockthe switch points in position in the shunt line. In Fig. 11, the lockingblock has been raised and turned into an intermediate position, both ofthe rods 11 and 11 being raised. In Fig. 12,

the locking block has been rotated into po-- sition to free the rod 11and then lowered to actuate the rod 11 to project the pin 1 1 into thecorresponding aperture in the locking bar 15 and also to operate thecorresponding signal through shunt box 18. In this construction, theswitch is always positively locked in one position or the other.

Having thus described our invention, we clain 1. A switch standcomprising a manually operated member, means connecting said member withthe switch points, a lock for the switch points, comprising a membermoving with said switch points and another member positively actuated bysaid manually operated member during movement thereof, in one location,said manually operated member having independent movement in anotherlocation.

2. A switch stand comprising a manually operated member, meansconnecting said member with the switch points actuated during rotarymovement of the manually operated member, a lock for the switch pointscomprising a member moving with said switch points and a bolt adapted tobe projected into engagement with said lock member positively actuatedby said manually operated member during vertical movement thereof, inone location, said manually operated member having vertical movementindependent of the bolt in another location thereof.

3. A switch stand comprising a stem or spindle, a handle pivotallymounted thereon, a block slidably mounted on said spindle engaged by thehandle, said block having a collar and a petticoat extending therefrom,a rod'having a jaw engaged by said collar and petticoat to operate thesame, a member movable with the switch points, and a locking boltconnected to said rod adapted to engage said member.

4:- A switch stand comprising a stem or spindle connected to the switchpoints, a handle pivotally mounted on said stem to swing about -an axistransverse to the axis of the stem, a block engaged by the handleslidably mounted on the stem but constrained to rotate therewith, acollar on the block having a petticoat extending therefrom for a portionof its circumference, a rod having jaws engaging said collar andpetticoat, a locking member operated by said rod during the pivotalmovement of the handle to lock and unlock a member moving with theswitch points, the movement of the stem in operating the switch pointsserving to disengage the petticoat from the rod.

5. A switch stand comprising a stem or spindle connected to the switchpoints, a handle pivotally mounted on said stem to swing about an axistransverse to the axis of the stem, a block engaged by the handleslidably mounted on the stem but constrained to rotate therewith, acollar on the block having a petticoat extending there from for aportion of its circumference, a rod having jaws engaging said collar andpetticoat, an apertured bar movable with the switch points, a lockingbolt operated by the rod during the pivotal movement of the hand to lockand unlock said bar, the movement of the sliding block during therotation of the stem serving to disengage the petticoat from the rod andreleasing from operative engagement with the handle.

6. A switch stand comprising a stem or spindle, a handle pivotallymounted thereon, a block slidably mounted on said spindle engaged by thehandle, said block having a collar and a petticoat extending therefrom,a rod having a jaw engaged by said collar and petticoat to operate thesame, a member movable with the switch points, a locking bolt connectedto said rod adapted to engage said member, and means controlled by thehandle for moving said petticoat into inoperative position relative tosaid rod.

7. A switch stand comprising a stem or spindle connected to the switchpoints, a handle pivotally mounted on said stem to swing about an axistransverse to the axis of the stem, a block engaged by the handleslidably mounted on the stem but constrained to rotate therewith, acollar on the block having a petticoat extending therefrom for a portionof its circumference, a rod having jaws engaging said collar andpetticoat, a locking member operated by said rod during the pivotalmovement of the handle to lock and unlock a member moving with theswitch points, the movement of the stem in operating the switch pointsserving to disengage the petticoat from the rod.

8. A switch stand comprising a stem or spindle connected to the switchpoints, a handle pivotally mounted on said stem to swing about an axistransverse to the axis of the stem, a block engaged by the handleslidably mounted on the stem but constrained to rotate therewith, acollar on the block having a petticoat extending therefrom for a portionof its circumference, a rod having jaws engaging said collar andpetticoat, an apertured bar movable with the switch points, a lockingbolt operated by the rod during the pivotal movement of the handle tolock and unlock said bar, the movement of the locking block during therotation of the stem serving to'disengage the petticoat from the rod andreleasing the latter from operative engagement with the handle.

9. A switch stand comprising a manually operated member said member withthe switch points, a lock for the switch points comprising a membermoving with said switch points and a member positively erated member,the movement of said manually operated member into position to operatethe switch points serving to disconnect said positively operated memberfrom the l ycking member actuated thereby and the return of the manuallyoperated member to its original position serving to connect said lockingmembers, said manually operated member having independent movement inintermediate locations.

10. In a switch stand, a switch-point-ac tuating spindle, a lockingblock rotatable with said spindle, a manually operated member forrotating said spindle and for sliding said block relative thereto, a rodactuated by the sliding movement of said block, said block in a certainposition relative to said rod having a sliding and rotary movementindependent of the rod whereby said switch points may be moved withoutactuating said rod.

In testimony whereof, we afiixed our signatures, in presence of twowitnesses.

ROBERT J. DAVIDSON. JAMES B. STRONG. Witnesses J. EDGAR DAVIDSON, LAVERNE EDWARD TRAVERS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. G.

and means for connecting actuated by said manually op

